docs: def set_fd_value(tag, value):
      """
      Setters for data that also work with implicit transfersyntax
  
      :param value: the value to set on the tag
      :param tag: the tag to read
      """
      if tag.VR == 'OB' or tag.VR == 'UN':
          value = struct.pack('d', value)
      tag.value = value